Cryo-deformation investigation of the HIAF prototype of cryostat (β = 0.15) with bottom-supported based on continuous monitoring

Abstract

The stability and dependability of the cryostat will be impacted by its thermal expansion and contraction. We first examined the heat transfer, alignment, and monitoring technique in a cryo-environment from a theoretical perspective to supply the appropriate quantity of pre-compensation and guarantee alignment of the cryostat with bottom-supported at 2 K in the HighIntensity heavy-ion Accelerator Facility (HIAF). The continuous monitoring of cryo-deformation based on a Wire Position Monitor (WPM) and Micro-Alignment Telescope (MAT) was taken out respectively. We have shown by comparing the results that both WPM and MAT monitoring are accurate. At 2 K, the bottom-supported cryostat exhibited less vertical low-temperature deformation than the top-suspended one. The pre-compensation of cryo-deformation under operating conditions, such as mechanical and thermal loads on the cryostat, will benefit from the analytical results. An optimization for the design of future cryostats will also benefit from the data.